When MPNZ's load shedding percentage exceeds 75%, the bar on the graph should move into a red zone. It signals the USI transmission grid is approaching peak loading and as MPNZ's load shedding percentage approaches 100% there is a reasonable likelihood of new chargeable peak periods occurring.

When the end of the bar is red MPNZ is deploying its maximum load control capability (100%). The longer MPNZ load shedding remains at 100% the more likely new chargeable peak periods will occur on the USI grid. This forms a reasonable signal for consumers to manage their load and to continue doing so until the bar on graph moves down from 100% and ceases to be red at the end.

When the whole bar is white (0%) MPNZ is not controlling any load and the grid will be operating at normal load levels. This bar is updated every 5 minutes.

The 5Es of Energy

The 5Es of Energy is a teaching resource that promotes electricity safety and renewable energy. Local area schools can request the resource kit to assist with their electricity education. The resource is compliant with the New Zealand curriculum, is easily accessible for teachers and students, provides staged progress of learning through years 1 to 8 and results in an increased understanding of energy, electricity safety, energy efficiency and renewable energy.

The 5Es of Energy uses an inquiry approach to learning: engage, explore, explain, expand and evaluate.

In addition to the resource kit, MainPower is available to visit schools with additional equipment, if requested.

For more information or to request a resource kit, contact MainPower's Communications Manager on 03 311 8300.